euangelion :: what is the gospel? part 2

After having discussed this topic of the Gospel to some degree, I recently came across this video from "Together for the Gospel" featuring a panel discussion between Dr. Al Mohler, Dr. R.C. Sproul, C.J. Mahaney, Dr. Ligon Duncan & Dr. Mark Dever. This discussion primarily features Sproul & Mohler discussing the topic of what the Gospel is.  I'd like to hear from each of you concerning your thoughts about their comments.